The Des Quinze lake - Barriere lake area is located in western Quebec and covers approximately 1400 square miles. It is underlain almost entirely by Precambrian rocks but contains a few occurrences of a Paleozoic formation. The oldest rocks are part of a volcanic- sedimentary assemblage which occurs in the southwest along a N.60o- E.-trending belt. The volcanics, consisting of andesite, dacite, hornblende rock, rhyolite, quartz-feldspar porphyry, tuff and agglomerate, contain interlayered lenses of greywacke, iron formation and siltstone. The hornblende rock represents, in most places, the coarsergrained portions of thick lava flows, but it may in some instances be of magmatic origin. The volcanic-sedimentary rock sequence is isoclinally folded along east-west, or nearly so, axes, and it dips steeply to the south. The volcanics are altered and somewhat recrystallized, and the mineral assemblage is that of the lower amphibolite facies and, in places, that of the upper greenschist facies. [...]
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.116834 |
| Date | January 1965 |
| Creators | Chagnon, Jean-Y. |
| Contributors | Stevenson, J. (Supervisor) |
| Publisher | McGill University |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Format | application/pdf |
| Coverage | Doctor of Philosophy. (Department of Geological Sciences.) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: NNNNNNNNN, Theses scanned by McGill Library. |
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